Eight Janus-type dendrimers up to the second generation were synthesized, and their thermal properties were evaluated. Compounds consist of the dendritic bisMPA based polyester moieties, and either 3,4-dihexyloxybenzoic acid or 3,4-dihexadecyloxybenzoic acid moieties, attached to opposite sides of the pentaerythritol core. The Structures of the molecules were verified with H-1 NMR, C-13 NMR, ESI TOF mass spectrometry and elemental analysis. The thermal stability was evaluated by thermogravimetric analysis. displaying onset decomposition temperatures (T-d) ranging from 241 to 308 degrees C. Phase transitions were studied by differential scanning calorimetry. Based on the performed studies it was confirmed that CH terminated dendrimers 2,4,6 and 8 exhibited liquid crystalline phases. Also, the X-ray powder diffraction measurements were accomplished for the dendrimers having terminal hydroxyl groups. (C) 2009 Elsevier B.V. All rights reserved